<template>
    <div>
        <div class="search">
            <input v-model="keyword" class="search-input" type="text" placeholder="输入城市名或拼音" />    
        </div>
        <div class="search-content" ref="search" v-show="keyword">
            <ul>
                <li class="search-item border-bottom" @click="handleCityClick(item.name)" v-for="item in list" :key="item.id">{{item.name}}</li>
                <li class="search-item border-bottom" v-show="hasNoData">没有找到匹配数据</li>
            </ul>
        </div>
    </div>  
</template>
<script>
import Bscroll from "better-scroll"
export default {
    name:'CitySearch',
    props:{
        cities:Object
    },
    data(){
        return{
            keyword:'',
            list:[],
            timer:null
        }
    },
    computed:{
        hasNoData(){
            return !this.list.length
        }
    },
    watch:{
        keyword(){
            if(this.timer){
                clearTimeout(this.timer)
            }
            if(!this.keyword){
                this.list = []
                return 
            }
            this.timer = setTimeout(()=>{
                const result = []
                for(let i in this.cities){
                    this.cities[i].forEach((value)=>{
                        if(value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1){
                            result.push(value)
                        }
                    })
                }
                this.list = result
            },100)
        }
    },
    mounted(){
        this.scroll = new Bscroll(this.$refs.search)
    },
    methods:{
        handleCityClick(city){
            this.$store.commit('changeCity',city)
            this.$router.push('/')
        }
    }
}
</script>
<style lang="stylus" scoped>
    @import '~styles/varibles.styl'
    .search
        height:.72rem 
        padding:0 .1rem
        background:$bgColor 
        .search-input 
            width:100%
            height:.62rem 
            line-height:.62rem 
            text-align:center 
            border-radius:.06rem 
            color:#666
            outline:none
            border:none
            box-sizing:border-box
    .search-content
        overflow:hidden
        position: absolute 
        top:1.58rem 
        left:0 
        right:0 
        bottom:0
        z-index:1
        background:#eee
        .search-item
            line-height:.62rem 
            padding-left:.2rem 
            background:#fff
            color:#666
</style>